I am currently trying to simulate an oscillator circuit using PSpice. I have been recommended to use a Voltage Controlled Voltage Source in lieu of a comparator, due to its more ideal characteristics (since I can't find a model for the one I need). I need to implement this as part of a bigger circuit, however. Ultimately, this is supposed to be an Inverting Comparator with Hysteresis. It is modeled by a piecewise linear VCVS: